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Extended Treatment With PEG-Intron® and Rebetol® in Patients With Genotype 1 Chronic Hepatitis C and Slow Virologic Response (Study P03685)

Information source: Merck Sharp & Dohme Corp.
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Hepatitis C, Chronic

Intervention: Combination of pegylated interferon alfa-2b (PEG-Intron®) and ribavirin (Rebetol®) (Drug); Combination of pegylated interferon alfa-2b and ribavirin (Drug)

Phase: Phase 3

Status: Completed

Sponsored by: Merck Sharp & Dohme Corp.


This is a controlled, randomized, parallel-groups, open-label, multinational study designed to evaluate the efficacy and safety of PEG-Intron (pegylated interferon alfa-2b) plus Rebetol (ribavirin) in subjects with chronic hepatitis C. It is designed to evaluate whether 72 weeks of treatment with PEG-Intron plus Rebetol is more effective than 48 weeks of treatment in subjects with Genotype 1 chronic hepatitis C who exhibit a slow response to treatment.

Clinical Details

Official title: A Study to Assess Treatment With PEG-Intron and Rebetol in Nave Patients With Genotype 1 Chronic Hepatitis C and Slow Virological Response

Study design: Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Sustained Virologic Response, Defined as a Plasma HCV-RNA (Hepatitis C Ribonucleic Acid) Level Below the LLQ (Lower Level of Quantitation) at 24 Weeks Post-treatment.


Minimum age: 18 Years. Maximum age: 70 Years. Gender(s): Both.


Inclusion Criteria:

- Adult subjects aged 18 to 70 years, of either sex.

- Genotype-1 hepatitis C virus (HCV)-ribonucleic acid (RNA)-positive subjects.

- Subjects must be willing to give written informed consent and able to adhere to

dosing and visit schedules.

- Confirmation of liver biopsy availability: Availability of a liver biopsy performed

within 18 months prior to the Screen visit, with a pathology report confirming the histological diagnosis of chronic hepatitis or liver cirrhosis.

- Compensated liver disease with the following minimum hematological, biochemical, and

serological criteria at the screen visit (WNL = within normal limits, ULN = Upper Limit Normal):

- Hemoglobin values of equal or more than 12 g/dL for females and 13 g/dL for


- White blood cells (WBCs) equal to or more than 3,000/mm^3

- Neutrophil count equal to or more than 1,500/mm^3

- Platelet count equal to or more than 80,000/mm^3

- Direct bilirubin up to 10% above ULN is acceptable.

- Indirect bilirubin up to 10% above ULN is acceptable (unless non-hepatitis

related factors such as Gilbert's disease explain an indirect bilirubin rise). In such cases indirect bilirubin should be less than or equal to 3. 0 mg/dL (less than or equal to 51. 3 µmol/L)

- Albumin up to 10% above ULN is acceptable.

- Serum creatinine up to 10% above ULN is acceptable.

- Alanine aminotransferase (ALT) level above ULN at Screen.

- At the Screen Visit, fasting glucose must be 70-140 mg/dL. Results between 116-140

mg/dL require repeat fasting glucose to be less than 140 mg/dL and HbA1C less than or equal to 8. 5%. HbA1C must be less than or equal to 8. 5% in diabetic subjects (whether on medication or diet controlled).

- Antinuclear antibodies (ANA) must be less than or equal to 1: 320.

- Thyroid Stimulating Hormone (TSH) WNL whether in euthyroid subjects or subjects

requiring medical treatment. (subjects requiring medication to maintain TSH levels within normal limits are eligible if all other inclusion/exclusion criteria are met).

- Confirmation by the principal investigator or a sub-investigator that sexually active

females of childbearing potential are practicing adequate contraception.

- Female subjects cannot be pregnant or breastfeeding and must be either

postmenopausal, surgically sterile or using 2 methods of birth control. While abstinence from sexual activity is the only certain method to prevent pregnancy, female patients of childbearing potential who are or who anticipate the possibility of becoming sexually active with a male partner must use a combination of the following 2 methods :

- Contraceptive pill or intrauterine device (IUD) or depot hormonal preparation

(ring, injection implant) and

- A barrier method of contraception such as diaphragm, sponge with spermicide,

condom, or a method of birth control considered acceptable by the study physician. Contraceptive measures will be reviewed with female subjects at each visit. Dual methods of contraception must be used for 1 month prior to the start of treatment and 6 months after treatment discontinuation.

- A serum pregnancy test obtained at Screen Visit prior to the initiation of treatment

must be negative.

- Confirmation by the principal investigator or a sub-investigator that sexually active

male subjects are practicing a method of contraception considered acceptable (vasectomy, condom plus spermicide, plus relationship with a female partner who practices an acceptable method of contraception). Contraception must be used during the treatment period and for seven months (or 6 months, according to local label) after the completion of therapy, including condom use by male subjects with pregnant partners.

- For subjects with a history of hypertension or diabetes, written clearance from an

ophthalmologist has to be obtained prior to treatment start. Exclusion Criteria:

- Pregnant women, women who plan to become pregnant, male subjects whose partner wants

to become pregnant, and breastfeeding women.

- Previous treatment for chronic hepatitis C with an antiviral or immunomodulating

agent or with some interferon or ribavirin product, whether alone or in combination.

- Subjects weighing over 125 kg.

- Suspected hypersensitivity to any interferon or ribavirin product.

- Participation in other clinical trial within 30 days prior to screen into this study.

- Coinfection with hepatitis B virus (HBV), human immunodeficiency virus (HIV), or


- Any cause of liver disease other than chronic hepatitis C, including but not limited


- Hemochromatosis

- Alpha-1 antitrypsin deficiency

- Wilson's disease

- Autoimmune hepatitis

- Alcoholic liver disease

- Non-alcoholic steatohepatitis (NASH)

- Drug-related liver disease

- Active malignant disease or suspicion or history of malignant disease within five

previous years (except for adequately treated basal cell carcinoma).

- Known coagulation diseases such as hemophilia; hemoglobin diseases (e. g.


- Known glucose 6-phosphate dehydrogenase (G6PD) deficiency

- Evidence of advanced liver disease such as history or presence of ascites, bleeding

varices, or hepatic encephalopathy.

- Subjects with organ transplants, except for corneal or hair transplant.

- Any known preexisting medical condition that could interfere with the subject's

participation in and completion of study, such as:

- Preexisting psychiatric condition, especially moderate to severe depression, or

a history of severe psychiatric disorder, such as psychosis, suicidal ideation, or suicide attempts. Severe depression includes the following:

- Hospitalization for depression

- Electroconvulsive therapy for depression, or

- Depression causing a prolonged absence from work or significantly altering

daily functions.

- Subjects with mild depression may be considered for entry into the study

provided that a pre-treatment assessment demonstrates that the subject's emotional status is clinically stable, in which case a management plan must be formulated for the subject; this management plan will become a part of the subject's medical record.

- Craniocerebral trauma which is not a concussion, or active seizure disorders

requiring medication.

- Clinically significant electrocardiogram (ECG) abnormalities and/or

cardiovascular dysfunction within 6 previous months (e. g., angina, congestive heart failure, recent myocardial infarction, or significant arrhythmia).

- Chronic lung disease (e. g., chronic obstructive lung disease)

- Poorly controlled diabetes mellitus

- Immune-mediated disease (e. g., inflammatory bowel disease [Crohn's disease,

ulcerative colitis], idiopathic thrombocytopenic purpura, systemic lupus erythematosus, autoimmune hemolytic anemia, scleroderma, severe psoriasis)

- Clinical gout

- Subject is or was a substance abuser, such as alcohol (80 g/day or more), methadone,

intravenous(IV), oral or inhaled drugs. To be considered for inclusion into the protocol, the subject must have abstained and agree to abstain from using any of the above for at least 6 months. Subjects treated with buprenorphine (Subutex) who have been stable for 6 months may be included.

- Cirrhotic subjects whose ultrasound confirms hepatocellular carcinoma.

- Any other condition that, in the investigator's opinion, could determine that

subject's participation in the study is not indicated or could interfere with the subject's participation in and completion of study.

- Subjacent disease that potentially would require systematic administration of


- Insulin dependent diabetes mellitus

Locations and Contacts

Additional Information

Starting date: December 2004
Last updated: June 8, 2015

Page last updated: August 23, 2015

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